package com.randi.common.utils;

import com.randi.common.core.domain.BaseEntity;
import com.randi.common.exception.ServiceException;
import com.randi.common.core.domain.model.LoginUser;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Component;

import java.util.Date;

/**
 * @author ziye
 */
@Component
public class SecurityUtils {

    /**
     * 用户ID
     **/
    public static Long getUserId() {
        try {
            return getLoginUser().getUserId();
        } catch (Exception e) {
            throw new ServiceException("获取用户ID异常");
        }
    }

    /**
     * 是否为管理员
     *
     * @return 是否为管理员
     */
    public static Boolean isAdmin() {
        try {
            return getLoginUser().getUser().isAdmin();
        } catch (Exception e) {
            throw new ServiceException("获取用户账户异常");
        }
    }

    /**
     * 获取用户账户
     **/
    public static String getUsername() {
        try {
            return getLoginUser().getUsername();
        } catch (Exception e) {
            throw new ServiceException("获取用户账户异常");
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser() {
        try {
            return (LoginUser) getAuthentication().getPrincipal();
        } catch (Exception e) {
            throw new ServiceException("获取用户信息异常");
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }


    /**
     * 设置创建和修改信息
     *
     * @param entity 实体对象
     * @param <T>    泛型
     */
    public static <T extends BaseEntity> void setUpdateInfo(T entity) {
        entity.setUpdateBy(getUserId());
        entity.setUpdateTime(new Date());
    }

    /**
     * 设置创建信息
     *
     * @param entity 实体对象
     * @param <T>    泛型
     */
    public static <T extends BaseEntity> void setInsertInfo(T entity) {
        setUpdateInfo(entity);
        entity.setCreateBy(getUserId());
        entity.setCreateTime(entity.getUpdateTime());
    }

}
